The production technology of black silicon carbide micro powder is not only the mechanical pulverization method mentioned before, but also the synthesis of arc and plasma arc. If you are not very clear about it, please understand it through the following knowledge.
Arc heating is a traditional method to obtain ultra-high temperature, generally up to 3000K; While the plasma arc can produce high temperature of 8000 ~ 15000 ℃. In addition to general Si and C containing raw materials, llic silicon and Ar+H2+CH4 mixture, or large blocks of silicon carbide and SiC+Si are also used for the plasma arc method to prepare black silicon carbide powder. Plasma arc method is easy to realize mass production, and because of high temperature can produce black silicon carbide powder.
Black silicon carbide powder has high hardness, strong cutting ability, stable chemical properties and good thermal conductivity. The microstructure is hexagonal crystal.
